Great! To uninstall, you'll have to uninstall it manually for now:
1. Make sure the "Start Sound Typist At Login" option is turned off.
2. Shut down Sound Typist by right clicking the Sound Typist systray icon (if it is started), and selecting Quit in the popup.
3. Then delete the app, which should be somewhere under "C:\Users\(your user name)\AppData\Local\Apps\2.0\".
4. Delete it from your start menu if it is there: "C:\Users\(your user name)\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Sound Typist".